How do you replace the alternator on a 1999 Ford Contour 2.0 liter?

To replace the alternator on a 1999 Ford Contour 2.0 liter, first disconnect the battery to ensure safety. Remove the serpentine belt by releasing tension on the tensioner pulley, then unbolt the alternator from its mount. Disconnect the electrical connectors and the battery cable from the alternator, and then install the new alternator by reversing these steps, ensuring everything is securely fastened before reconnecting the battery. Finally, check the belt alignment and tension before starting the engine.